heteroaryl compounds, their compositions and their use as inhibitors of protein kinases

A compound with the following formula: Formula ** ** or a pharmaceutically acceptable salt thereof, wherein: R1 is phenyl unsubstituted or substituted with a heteroaryl group C3-10 substituted or unsubstituted; R2 is methyl or ethyl substituted with substituted or unsubstituted heterocycloalkyl; R3 is H, C1-8 substituted or unsubstituted alkyl, substituted or unsubstituted heteroaryl, substituted or unsubstituted cycloalkyl, substituted heterocycloalkyl or unsubstituted, -NHR 4 or -N (R4) 2; and R4 is each independently C 1-8 alkyl substituted or unsubstituted aryl, substituted or unsubstituted, substituted or unsubstituted heteroaryl, substituted or unsubstituted cycloalkyl, or substituted heterocycloalkyl or unsubstituted.